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Pygochelidon (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Pygochelidon" in Spanish language version.

refsWebsite
Global rank Spanish rank
1biodiversitylibrary.org
387th place
652nd place
1cornell.edu
332nd place
408th place

biodiversitylibrary.org (Global: 387th place; Spanish: 652nd place)

  • Baird, S.F. (1865). «Review of American Birds in the Museum of the Smithsonian Institution. Part 1. North and Middle America». Smithsonian Miscellaneous Collections 181. p. 308. BHL page 13272952. 

cornell.edu (Global: 332nd place; Spanish: 408th place)

birds.cornell.edu

  • Clements, J. F., P. C. Rasmussen, T. S. Schulenberg, M. J. Iliff, T. A. Fredericks, J. A. Gerbracht, D. Lepage, A. Spencer, S. M. Billerman, B. L. Sullivan & C. L. Wood (2023). The eBird/Clements checklist of Birds of the World: v2023 (Planilla Excel) (en inglés). Disponible para descarga. Ithaca, NY: Cornell Lab of Ornithology.